We continue to travel around the world using banknotes in our pocket. Today we are in Russia, Solovetsky Islands in the White Sea, where you can find well-known Solovetsky Monastery and Solovki prison camp.

On the 500 rubles bill and far away in the background of the photo - Solovetsky Monastery, the greatest citadel of Christianity in the Russian North before being turned into a special Soviet prison and labor camp (1926–1939), which served as a prototype for the GULAG system. Situated on the Solovetsky Islands in the White Sea, the monastery braved many changes of fortune and military sieges. Its most important structures date from the 16th century when by the end of the 16th century, the abbey had emerged as one of the wealthiest landowners and most influential religious centres in Russia.

Colombian police with fake 100-dollar bills in Cali, where during a police operation were seized fake notes worth 2.5 million dollars.

(Luis Robayo/AFP/Getty Images)

Counterfeiting of the currency of the United States is widely attempted. According to the United States Department of Treasury, an estimated 70 million counterfeit dollars are believed to be in circulation, or approximately $1 in counterfeits for every $12,500 in genuine currency.

60-year-old Pamela Cole has spent most of her life putting together an impressive collection of over 2,000 ceramic cats, and doesn’t plan to stop anytime soon.

When Ms. Cole says she’s crazy about cats, you best believe she means it – her house in Hollywood, Birmingham is practically full of ceramic cats, from a common replicas of cartoon characters like Top Cat, to 7th century BC Egyptian statuettes.

This unusual obsession with ceramic cats can be traced back to Pamela Cole’s childhood years, in the 1940s, when her mother bought her a cat to stop her feeling lonely. It was a simple pottery cat from a gift store in Corporation Street, but it kick-started her passion for collecting, and from then on she spent her days scouring shops and craft fairs in search of cat china.